I have 5 of his books. VERY deep and thought provoking reading. He offers fascinating insight. There are several video lectures of him presenting online for anyone interested in a taste. Christian faith based. Google his name for video’s.
He was very deep and thought provoking but also had the common touch. I heard him say that he loved going to UFO conferences and discuss such topics. Hiser said that he found that particular audience more open to difficult truths than the church often was. He was always a favorite on the Coast-to-Coast AM radio show and had said that he was convinced that Roswell was a government psyop to deflect from whatever was really going on. The US government didn’t want the public to know that they were testing advanced WW2 German technology and would rather let the public think it was an alien craft.